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According to a survey conducted at the local DMV, 49% of drivers who drive to work stated that they regularly exceed the posted speed limit on their way to work. Suppose that this result is true for the population of drivers who drive to work. A random sample of 13 drivers who drive to work is selected. Use the binomial probabilities table (Table I of Appendix B) or technology to find to 3 decimal places the probability that the number of drivers in this sample of 13 who regularly exceed the posted speed limit on their way to work is
a. at most 4
Probability =
b. 6 to 9
c. at least 6
scores on an exam follow an approximately normal distribution with a mean of 76.4 and a standard deviation of 6.1
christine is currently taking college astronomy. the instructor often gives quizzes. on the past seven quizzes
A random sample of 346 individuals is selected, and the individuals are classified according to their smoking habits and the smoking habits of their parents. The results are given in the contingency table below.
What other variables, aside from her mother's height, might be useful for improving your prediction? How could you use these variables in conjunction with the mother's height?
According to table, which presents a MODI solution for a transportation problem, if that solution is used, which of the following is true.
A work-study engineer times a certain operation, and discovers that the average time it takes is 10 minutes, but on 15% of occasions it takes more than 13 minutes.
The average body temperature for healthy adults is 98.6° F. Is this statement true? Do all healthy people have exactly the same body temperature? A study was conducted a few years go to examine this belief.
The class to get A's, 30% to bet B's, 30% to get C's, 15% to get D's and 10% F's. What would be the minimum and maximum scores required for each of these grades?
There are 72 data values altogether. The degrees of freedom for the Between(dfB) and the degrees of freedom for the With-in (dfW) are?
a sample of size 30 from a normal population with known variance is taken. which one of the following is most correct
Items that fail during the test are not replaced. Determine the plan, using Handbook H-108, if the sample size is to be five times the rejection number.
From the shipment you take a random sample of 20. When sampling with replacement (binomial), determine the probability of obtaining: Exactly two defective components in the sample of 20.
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